I’m building a multi-tenant Healthcare Management System delivered as a SaaS product and need a solid Django back-end to power it. The core modules already outlined are patient management, billing & payments, and appointment scheduling, all exposed through a well-documented REST API so web and mobile front-ends can consume them easily. Beyond the basics, the system must connect smoothly with external Electronic Health Record systems (FHIR or HL7 endpoints), standard payment gateways, and insurance-provider APIs, passing data securely and logging every transaction for audit purposes. Role-based access is critical: doctors, administrators and patients will each see only what they should, so fine-grained permissions, robust authentication (JWT or OAuth2) and an activity trail are expected. If you’re comfortable architecting scalable Django apps, working with PostgreSQL, integrating third-party services and writing clean, tested code, this project will give you room to shine. Deliverables • Django project configured for multi-tenant SaaS • REST endpoints covering patient management, billing, and appointment scheduling • Secure integrations with EHR, payment gateway and insurance APIs • Role-based permission system for doctors, admins and patients • Automated tests and concise API documentation (Swagger or similar) I’ll review work in a staging environment before final deployment; clear commits, passing tests and documentation make for a smooth acceptance. Let’s build something healthcare providers can trust.